diff options
Diffstat (limited to 'tests/ui/transmutability/primitives/numbers.rs')
| -rw-r--r-- | tests/ui/transmutability/primitives/numbers.rs | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/tests/ui/transmutability/primitives/numbers.rs b/tests/ui/transmutability/primitives/numbers.rs new file mode 100644 index 00000000000..0df43d2045f --- /dev/null +++ b/tests/ui/transmutability/primitives/numbers.rs @@ -0,0 +1,128 @@ +#![crate_type = "lib"] +#![feature(transmutability)] +#![allow(dead_code)] +#![allow(incomplete_features)] + +mod assert { + use std::mem::BikeshedIntrinsicFrom; + struct Context; + + pub fn is_transmutable<Src, Dst>() + where + Dst: BikeshedIntrinsicFrom<Src, Context> + {} +} + +fn should_accept_identity() { + assert::is_transmutable::< i8, i8>(); + assert::is_transmutable::< u8, u8>(); + assert::is_transmutable::< i16, i16>(); + assert::is_transmutable::< u16, u16>(); + assert::is_transmutable::< i32, i32>(); + assert::is_transmutable::< f32, f32>(); + assert::is_transmutable::< u32, u32>(); + assert::is_transmutable::< i64, i64>(); + assert::is_transmutable::< f64, f64>(); + assert::is_transmutable::< u64, u64>(); + assert::is_transmutable::< i128, i128>(); + assert::is_transmutable::< u128, u128>(); + assert::is_transmutable::<isize, isize>(); + assert::is_transmutable::<usize, usize>(); +} + +fn should_be_bitransmutable() { + assert::is_transmutable::< i8, u8>(); + assert::is_transmutable::< u8, i8>(); + + assert::is_transmutable::< i16, u16>(); + assert::is_transmutable::< u16, i16>(); + + assert::is_transmutable::< i32, f32>(); + assert::is_transmutable::< i32, u32>(); + assert::is_transmutable::< f32, i32>(); + assert::is_transmutable::< f32, u32>(); + assert::is_transmutable::< u32, i32>(); + assert::is_transmutable::< u32, f32>(); + + assert::is_transmutable::< u64, i64>(); + assert::is_transmutable::< u64, f64>(); + assert::is_transmutable::< i64, u64>(); + assert::is_transmutable::< i64, f64>(); + assert::is_transmutable::< f64, u64>(); + assert::is_transmutable::< f64, i64>(); + + assert::is_transmutable::< u128, i128>(); + assert::is_transmutable::< i128, u128>(); + + assert::is_transmutable::<isize, usize>(); + assert::is_transmutable::<usize, isize>(); +} + +fn should_reject_extension() { + assert::is_transmutable::< i8, i16>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, u16>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, i32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, f32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, u32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i8, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< u8, i16>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, u16>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, i32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, f32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, u32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u8, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< i16, i32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, f32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, u32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i16, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< u16, i32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, f32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, u32>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u16, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< i32, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i32, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i32, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i32, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i32, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< f32, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< f32, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< f32, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< f32, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< f32, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< u32, u64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u32, i64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u32, f64>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u32, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u32, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< u64, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< u64, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< i64, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< i64, i128>(); //~ ERROR cannot be safely transmuted + + assert::is_transmutable::< f64, u128>(); //~ ERROR cannot be safely transmuted + assert::is_transmutable::< f64, i128>(); //~ ERROR cannot be safely transmuted +} |